Sleeping Problems

We moved Big Brother down into the basement recently in anticipation of the new baby. He did alright for a couple of weeks, but not anymore. He has let his imagination get the best of him. We started going to our room a couple of nights ago and found him sleeping at the top of the stairs.

Any ideas what to do? We need him to stay down there, there isn't any other option, but I hate to think that he is scared to death down there. We tried putting a fan down there to block the noise and thought that was working, too, but I found him playing with his Knex at 6:30 this morning on the bathroom floor.
And then Little Sister woke up this morning throwing up. I really REALLY hate dealing with puke. Especially when I am sick myself. I was determined to be bugged for the rest of the day, but then she fell asleep on the couch looking so cute.

And it makes it hard to be bugged with such a cutie. She looks so peaceful and not sick. And this afternoon was much better. She fell asleep a couple more times, her fever broke, and she is happy now.

All is well.